[gnome-tweaks] Update Catalan translation

[Jordi Mas <jmas src gnome org>]

commit 30ad3fe8bf618cb88f722ccce7b8fdbf4f9bea2d
Author: Jordi Mas <jmas softcatala org>
Date:   Wed Dec 9 21:34:38 2020 +0100

    Update Catalan translation

 po/ca.po | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/po/ca.po b/po/ca.po
index 106bea2..d624949 100644
--- a/po/ca.po
+++ b/po/ca.po
@@ -767,7 +767,7 @@ msgid ""
 "When on, modal dialog windows are attached to their parent windows, and "
 "cannot be moved."
 msgstr ""
-"Quan està activat, les finestres de diàleg modals estan units a les "
+"Quan està activat, les finestres de diàleg modals estan unides a les "
 "finestres pares, i no es poden moure."
 
 #. https://help.gnome.org/users/gnome-help/stable/shell-windows-tiled.html